“Official templates” are not necessarily any better than user created ones of which there are quite a few around and some can be found under the sticky at the top of the forum. I think John has done a good job overall with the BBC templates and would recommend them, though I did find it necessary to change a handful of things for string responsiveness in particular. The really advanced libraries like VSL full have so many possible ways of doing them it really is best to either start from scratch or take something which approaches the way you use the library but having said that, it does look like VSL will bring out at least something for the Synchron Special Edition, although that one is relatively easy to programme.
In short, decide on your library first according to its attributes. From what I can remember, it was Jonathan Loving who did the Sibelius EWQL soundsets, rather than anything official from the software company but I stand to be corrected. I myself only use the Choirs from that company and that requires only the default EM. As for Berlin and CSS, I have no direct experience and, as you say, there is not yet a full orchestra available from Cinematics. I’m sure when there is, a fair number of people will take notice.